landmark decision
landmark decision. A judicial decision that significantly changes existing law. • Examples are Brown v. Board of Educ., 347 U.S. 483, 74 S.Ct. 686 (1954) (holding that segregation in public schools violates the Equal Protection Clause), and Palsgraf v. Long Island R.R., 162 N.E. 99 (N.Y. 1928) (establishing that a defendant’s duty in a negligence […]